The 24-hour ECG is used to monitor the heart rate, myocardial ischemia and arrhythmia, and to capture the specific situation, which can guide the clinical diagnosis and treatment. It can also guide clinical diagnosis and treatment, and can determine medication based on it. Do not take a shower during the process of carrying, do not be too close to cell phones, computers and other electrical appliances, because this will also cause interference. The process of carrying the device is connected to the electric negatives and wires, through the electrode film to transmit the conduction information of the human heart to the small machine box, collect 24 hours and then transfer to the computer, through the professional doctor to analyze the specific situation of the patient, give accurate diagnosis report, and provide to the clinician, the clinician will then decide the next step of treatment according to the results of the report.